#define _CRT_SECURE_NO_WARNINGS 1
#include <vector>
template <class T>
class Less
{
public:
	bool operator()(T x, T y)
	{
		return x < y;
	}
};

namespace ljt
{
	template<class T, class Container = vector<T>, class Compare = less<T>>
	class priority_queue
	{
	public:

		void adjust_up(int child)
		{
			int parent = (child - 1) / 2;
			while (child > 0)
			{
				if (_con[child] > _con[parent])
				{
					swap(_con[child], _con[parent]);
					child = parent;
					parent = (chlid - 1) / 2
				}
				else break;
			}
		}
		void adjust_down(int parent)
		{
			int child = parent * 2 + 1;
			while (child < _con.size())
			{
				if (chlid + 1 < _con.size() && _con[child + 1] > _con[child])
				{
					++child;
				}
				if (_con[child] > parent)
				{
					swap(_con[child], _con[parent]);
					parent = child;
					child = parent * 2 + 1;
				}
				else break;
			}
		}

		void push(const T& x)
		{
			_con.push_back(x);
			adjust_up(_con.size() - 1);
		}
		void pop()
		{
			swap(_con[0], _con[_con.size() - 1]);
			_con.pop_back();
			adjust_down(0);
		}

		const &T top()
		{
			return _con[0];
		}
		
		bool empty()
		{
			return _con.empty();
		}

		size_t size()
		{
			return _con.size();
		}


	private:
		Container _conl;
	};
}